[PATCH 17/22] btrfs: don't take the dio_sem in the fsync path

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Since we've changed the fsync() path to always run ordered extents
before doing the tree log we no longer need to take the dio_sem in the
tree log path.  This gets rid of a lockdep splat that I was seeing with
the AIO tests.

Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
---
 fs/btrfs/tree-log.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index f8220ec02036..aa06e1954b84 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -4439,7 +4439,6 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
 
 	INIT_LIST_HEAD(&extents);
 
-	down_write(&inode->dio_sem);
 	write_lock(&tree->lock);
 	test_gen = root->fs_info->last_trans_committed;
 	logged_start = start;
@@ -4520,7 +4519,6 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
 	}
 	WARN_ON(!list_empty(&extents));
 	write_unlock(&tree->lock);
-	up_write(&inode->dio_sem);
 
 	btrfs_release_path(path);
 	if (!ret)
-- 
2.14.3

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